Composite rolls for forming tie-plates.



D. H. LENTZ. COMPOSITE ROLLS FOR FORMIN G TIE PLATES.

APPLIUATION FILED 1030. 1, 1909.

2 SHEETS'nHEET l.

Patented Feb 7,

1). H. LBNTZ. GOMPOSITE ROLLS FOR FORMING TIE PLATES.

APPLIGATION FILED DBO.4,1909.

983,379. Pa ented F2117, 1911.

2 SQE'HTS'SHEET 2.

= the lower roll.

STATES. PAaENT OFFICE.

DAVID H. mm, or" cnrcneo, ILLmoIs, ASSIGNOR T0 snLLI-ms MANUFACTURING sorg um-or CHICAGO, ILLINOIS, .e conronnrronor ILLINOIS. e

. ROLLS FOR FORMING TIE-PLATES.

Specification of Letter: latent.

Patented Feb. 7, 1911;

fled December 4, 1909.; serial No. 531,471.

To all whom 'it may Be it known that 1, DAVID H..-Ln,N'rz, a citizen of the United, States, at Chicago, in the county of Cook and State of IlllHOlS, have invented certain new and useful Improvements in Composite Rolls for Forming Tie-Plates, of which the following is aspecification. Myfiinvention relates torolls intended part cularly for formin railway rail .plates;-and has ,for its ob ecttoprovide a new and improved construction of rolLof composite character, consisting. of a bodypart of-iron or other relatively inexpensive metal, and a part formed of' high carbon steel which is securely fastened to the iron body, but so that it, may be removed there from when occasion demands.

The invention has for further objects such other new and improved constructions in rolls for forming tle-plates'and the like as will be described in this specification and particularly specified in the claims appended. thereto.

The accom ,anying drawings illustrate a preferred em ime'nt'of my invention, to 'gether. with 'aimodification of the same.

' In these 'drawings Figure 1 shows a lpair,

ofrolls adapted for the making of tie-p tes and embodying my invention, the upper -'roll being shown in elevation and the lower roll. in section. Fig. 2 is a. section on line 2-2 ;pf--Fig. 1 looking in the direction of the arrows. Fig. 3 is a circumferential elevationiof the hard steel member-or collar of Fig. 4 is a corresponding view of the hard steel collar of the upper roll.- Fig. 5 is a fragmentary end elevation 1 one or other of the rolls.

ofthe retaining'nut employed to secure the hard steel collar against the abutting face of Fig.6 is a view similar to Fig. 1, illustrating a modified construction. Fig. 7 is a perspective 'view of atie-plate such as may be manufactured by use of the rolls of my invention, showing the'upper surface of the plate. Fig; 8 is asimilar view showing the under surface of the plate; and Fig. 9 is a fragmentary enlargedisection through the rolls illustrating the formation of the tie-plates. Like characters of refercnce'indicate like parts in .the several figures of the drawings. The. strains put upon tielates when in use are such as to tend to reak them on transverse lines, that is, lengthwise of the ra ls- Ithas, therefore, been found expe dient to roll tie-plates lengthwise so that the grain of the metal will be transverse to the the drawings. When such a plateisrolled lengthwise in the manner shown in Fig. '9,

rails. Such plates are ordinarily formed the rolling surfaces are subi'ected to'tremendous strains, and portion arly the surface which forms the u standing rib or abutment on the upper ace of the plate,

- these strains tending to wear down'the rolling surfaces very rapidly unless the latter are composedfof very hard metal. If the rolls, forexample, are made of iron or low carbon steel, the rollin surfaces very soon .become so worn as to change the confi ration of the plates. For example, i, the Y rolls weer appreciably or are returned as a result of-wear, the diameters ofthe wal s are decreased, which results in 'makin the lates shorter. On the other hand, if t e rol s are made entirely of high carbon or other hard steel,.not only are they very expensive but in case of wear or other injury to the rolling surfaces, the whole roll has to be thrown.

away.

The principal object of my presentins vention is to provide a roll, suitable for roll-' face alone being of hard or high carbon steel, and toprovide novel means whereby the hard steel member may be securely fastened to the body in such a ,way that'the composite structure may withstand the very.

great strains to which it is subjected and so that there may be no wear between the body of the roll and the attached part causing looseness; while at the same time the attachment shall be of such a nature as to 31 low the hard steel member to be easily reoccasion demands. A composite roll of this character has another advantage, in that the-removal of the hard steel member from moved from the body of the roll when the body of the roll facilitates cutting the pattern on the hard steel part. With rolls of integral structure it is often dillicult to get at. be rolling surface of the roll for this purpose.

. will-be hereinafter noted, so that it will and arin be necessary to describe in detail only one of them. Roll B, for example, consists of a body-part of cast iron, low carbon steel or other suitable, inexpensive metal, providedwith a boss 11, grooved at 12, and a preferably integral shaft 13 threaded at 14.

l 5 represents the removable hard steel"in'em ber-orcollar whichfits over'the shaft 13, the latter being preferably formed with a featherlGQ As shown in Figs. 2 and 3, suitable grooves 1'( are cut'in the surface of the co1lar15 to producefthe ribs 18 on the other, side of the tie-plate G, (Fig.- 8). The collar is held between boss or integral flange 11 against which is screwed a nut 20,- preferably provided with notches 21for a spanner.-

Inj th operation of {rolls of this sort a very great stialn is-put upon the-collars which prov de the rolling surfaces, and'ther'ef'orc, so

if these collars depended upon a direct ongagem entwith the shaftor spindle portions of the roll's, suchan engagement, for example as'is provided b a feather-.01- the like, the; torsional. strain hrs and the soft metal spindles would soon result in a looseness undesirable in itself and injurious or destructive to the soft .metal et'ween the hard steely-colspindles. I therefore provide, preferably, an arrangement' by means of 'avhich the strains are "diminished, and which moreover makes' 'ita'po'ssible to take "up any'looseness whiclr'niay occur. In the structure "shown in Figs.l'-to 5 inclusive, the collar is formed with two beveled integral hubs or annular wedgc shaped projections 22 which fit into correspondingly tapered recesses 23 in the boss-11 and ring '19. By screwing up the nut 20, these wedge-shaped projections are forced into the recesses, with the result that the, parts .11 and 19 relieve the feather of I a great deal of the strain which would otherwise be exerted against it. If any looseness is developed it. may be taken up by a further engaging parts of the'lower roll .B in close I ever, -that. tl e engagement as between the collar andthe, clamping members on'either side of the same is such as to allow-wedge action between the annular projections 22 and the grooves inf'which they fit, the drawing in other words showing the parts when tightened up to the fullest extent. By this arrangement the fit between the collar and" the shaft tnay' relatively loose, so that seen in Fig. 9.

iv or removable flange member l9 plate.

.ing member 19 is smaller in diameter than ring Besides this, the surface of the hard steel collar 15 of the upper-roll is, of course, formed with-a pattern appropriate. for producing the upper surface of thetieplate C. Thus the rib 26,011 the upper surface of the plate C, (Fig. 7) is formed by oneof a number of grooves 27 on collar 15, i

the bevels 28 and '29 being produced by the surfaces 30, 31 respectively, as will be best The clamping member 19 is held in posit n: the nut 20. on the threaded part 141 of the roll. The collar 15, itwill be seen, forms what may be termed a tongue which titsinto the groove between the boss 11 .andthe ring 19. \Vhilcin thev drawings I have shown both rolls -of sectional construction, it wouldbe possible to use one of the sectional rolls of my invention with a suitably formed roll of integral con-. st-ruction. a

It will-be understood that my invention is not liinited to rolls .so conformed as to 'pr0- duce the-particular sort of plate shown'iii. Figs. 7 to 9. llates of different configuration might be produced by varying the contours of the rolling surfaces.

In Fig. 6 I have shown a simplified form of construction, which, while it does not possess all of the advantages of the structure of F ig. 1,'embodies some of the desirable features of my invention. In this fig-. ure the roll I) is of similar form to rolls A of Fig. 1, except that the hard steel collar 15 is not dished nor provided with hubs and the. clamping members 11 and 19 are formed with plain surfaces'at right angles to the 'axis of the roll. A nut 13 on the threaded part 14; clamps the collar between the integral boss 11 and the collar 19. I have shown the lowerroll E as of integral construction. That is, insteadot' the loose collar 19 the roll is formed with the integral boss or flange 19. It will be seen that the bosses orflangesll, 19 fol-ma slot in the lower roll into which projects the collar or 1 toi g'ue li ofthe roll D. periphery ofroll s E included between the bosses 11 "and 19 will, of course, be suitably formed for producing the. desired configuration of-tlie lower sin-face. ol? the tie-i p The operation of the rolls constructedas shown, will be as follows:- 'lherolls, itwill be understood, are suitably-journaled and ass,

' lower roll so as to'act-as a guide. The metal passing between the rolls is given the conformation shown ill Fig. 9. Afterward, this 'strippf metal-"may be cut .up to form lates of the sort shown in Figs. .7 and 8.

Vhen

. therollingsurfaces become worn or othermands, without requirin wise injured, the collars ma be removed by unscrewing nuts 13.;- .The act that the collars are wedged betweenthe clamping memberssll and 19 instead of-dependmg'u on a direct engagement with the shaft Ina es'it possible to have a'loose fit between the collars and the shaft, so that the collars may be easily taken ofi and 'put on. The collars may thus be renewed when occasion dethe making of entirely newrolls. The 00 lars are relatlvely small in comparison to the bulk of the rolls as a whole, which, of course, results in an economical construction, since the main por-* tions of the rolls may be constructed of relatively cheap metal The engagement b'etween the collars and. the means employed for clamping the collars on the rolls 18 such as is well calculated to withstand the great strains developed. These strains are very considerable due to the fact that a considerable amount of metal has to be displaced ,to form the ribs, and particularlyto form the relatively thick ribs 26 on the upper surfaces of the plates. It is'much easier to produce a plate of this sort by rollin it crosswise, that is lengthwise of rib 2G; ut,

' as has been stated, this method of manufac- .have a highly tempered metalworking ture makes the grain run the wrong way of the-plate.' i"

To produce the best results, the high carbon steel collar is preferably temperedlike any other metal working tool, with the result that in my complete rolls I virtually;

too of high carbonsteel, that is the figure roll or rolls, combined-with means' for' confining and fedin" the-heatedmetal blank or billet to such ml or rolls in such a manner that the plastic metal is reliably controlled and caused to flowin the required direction, so; as to give the desired configuration, .in which combination the particular part which'bears; the heaviest strains is readilyreplaceable' and is'so formed as to meet these .strains. with a minimum of wear and in such'a ma n-. ner afsfto reliably force the plasticm'etalf into' the form required. The blank-while operated upon by the rolls is confined inthe groove formed by the flanges on "one of the rolls. Therefore, no-fins are formed.

I do ,not limit myself to the exact deconstructions and arrangements shcnvn, as modifications might be devised are .8

tion are particularly suitable for. the formation'of tie-plates, and while my invention has solved an important prob em in the manufacture of tie-plates and has resulted in facilitating and cheapening the manufacture of the same, the invention might be employed in the construction of rolls to be used for-rolling other metal plates of a similar character, where similar conditions prevail.

- 1. A metal working roll comprising a body part provided with a shaft, a collar on said shaft, and clamping means on said shaft arranged at oppos te sides of said collar, said clampin means and collar being formed with sur aces of contact substantially transverse to the axis of the roll and with 'co-engaging tapered recesses and wedging projections providing surfaces of contact having a slight" inclination with respect to the axis of the roll.

. 2. Metal working rolls consisting of a roll having a body portion provided with an integral flange, a collar and clamping means on the other side of the collar from said integral flange, said flange and .clampin means projectin' beyond the surface of said collar; combined with a second roll having a removable tongue adapted to operate in said groove an width as the groove to form a closed ass, said collar and. tongue consisting aell of 'a singlevbody of high carbon steel having 'a attern cut on its rolling surface, the b0 y portions of said. rolls being ofsoft metal.

3; Metal working rolls consisting of a roll having a' body portion provided with an integral flange, a collar and clam ing means on the other side :of the collar rom said integral flange, said flange and clamping means projecting beyond the surface of said'collar; combined with a second roll having a removable tongue, an integral .fiange on one side of said tongue, clamping means on the other side thereof, said tongue being ada'ted to operate in said groove and .substantia ly the same width as the groove to form a closed pass, said collar and tongue -bei'n formed with annular wedging'hubs 'whici project from the end faces of the same, andv said flanges and clamping means being formed with tapered grooves substantially as described.

bear against corresoonding end faces (if said collar; saidcollar. mg formed with wedgwhich would come within my invention as defined by the c aims.

ing hubs which'project from its said end \Vhile the composite rolls of my invenbers provided with surfaces at substantially.

faces, rand said clamping members being substantially the same metal workipg roll comprising in 1 combination a body part, a collar provided fozmcd with wider-cut grooves which are faces substantially at right angles to thc lapel-rd and rcuoiw ihc \vcdging hubs on axis of -thc roll and being formed with said collar. v 1111CleY-Ctli? tapered grooves; said collar be- 5. A metal working r011 compri$ing in ing formed with Wedging hubs which procmubinu'tion a'body part, a-collar provided jecb from its vend faccs into said under-cut 15 ltll'jl rrollingssurface, a boss formed on grooves, substantially as described. said body parflu clamping ring, and meanh DAVID H. LEN-TZ. for clamping mid collar between said clamping ring and said boss; said clamp- 10 ing ring and boss being formed with 111- \Vitncsscs G. Y. Smxxrn,

H. L. PnoK. 2' 

